91. Complications of placing an NGT / Proper technique for gastric lavage (for tox) / NAC protocol October 15th, 2007 by reuben in .GI bleed, tox Also, totally misplaced NYPCC NAC APAP Acetadote Protocol for tylenol acetaminophen overdose here. Back Top Tags: card 90. Limitations of NGT placement in GI bleed / % patients with hematochezia with UGIB 92. Marker between upper and lower GI tract / Reason blood turns to coffee grounds / Amount of blood required to produce melena Leave a Reply Cancel reply Please post any discussion to the emupdates Reddit page.